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Li R, Rosado-Souza L, Sampathkumar A, Fernie AR. The relationship between cell wall and postharvest physiological deterioration of fresh produce. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108568. [PMID: 38581806 DOI: 10.1016/j.plaphy.2024.108568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/08/2024] [Accepted: 03/25/2024] [Indexed: 04/08/2024]
Abstract
Postharvest physiological deterioration (PPD) reduces the availability and economic value of fresh produces, resulting in the waste of agricultural products and becoming a worldwide problem. Therefore, many studies have been carried out at the anatomical structural, physiological and biochemical levels and molecular levels of PPD of fresh produces to seek ways to manage the postharvest quality of fresh produce. The cell wall is the outermost structure of a plant cell and as such represents the first barrier to prevent external microorganisms and other injuries. Many studies on postharvest quality of crop storage organs relate to changes in plant cell wall-related components. Indeed, these studies evidence the non-negligible role of the plant cell wall in postharvest storage ability. However, the relationship between cell wall metabolism and postharvest deterioration of fresh produces has not been well summarized. In this review, we summarize the structural changes of cell walls in different types of PPD, metabolic changes, and the possible molecular mechanism regulating cell wall metabolism in PPD of fresh produce. This review provides a basis for further research on delaying the occurrence of PPD of fresh produce.
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Affiliation(s)
- Ruimei Li
- National Key Laboratory for Tropical Crop Breeding, Sanya Research Institute/Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Sanya, China; Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Laise Rosado-Souza
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Arun Sampathkumar
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany.
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Liu E, Xu L, Luo Z, Li Z, Zhou G, Gao H, Fang F, Tang J, Zhao Y, Zhou Z, Jin P. Transcriptomic analysis reveals mechanisms for the different drought tolerance of sweet potatoes. FRONTIERS IN PLANT SCIENCE 2023; 14:1136709. [PMID: 37008495 PMCID: PMC10060965 DOI: 10.3389/fpls.2023.1136709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/13/2023] [Indexed: 06/19/2023]
Abstract
Drought is a common environmental stress with great negative impacts on plant growth, development and geographical distribution as well as agriculture and food production. Sweet potato is characterized by starchy, fresh and pigmented tuber, and is regarded as the seventh most important food crop. However, there has been no comprehensive study of the drought tolerance mechanism of different sweet potato cultivars to date. Here, we studied the mechanism for drought response of seven sweet potato drought-tolerant cultivars using the drought coefficients, physiological indicators and transcriptome sequencing. The seven sweet potato cultivars were classified into four groups of drought tolerance performance. A large number of new genes and transcripts were identified, with an average of about 8000 new genes per sample. Alternative splicing events in sweet potato, which were dominated by first exon and last exon alternative splicing, were not conserved among different cultivars and not significantly affected by drought stress. Furthermore, different drought-tolerance mechanisms were revealed through differentially expressed gene analysis and functional annotation. Two drought-sensitive cultivars, Shangshu-9 and Xushu-22, mainly resisted drought stress by up-regulating plant signal transduction. The other drought-sensitive cultivar Jishu-26 responded to drought stress by down-regulating isoquinoline alkaloid biosynthesis and nitrogen/carbohydrate metabolism. In addition, the drought-tolerant cultivar Chaoshu-1 and drought-preferred cultivar Z15-1 only shared 9% of differentially expressed genes, as well as many opposite metabolic pathways in response to drought. They mainly regulated flavonoid and carbohydrate biosynthesis/metabolism in response to drought, while Z15-1 increased photosynthesis and carbon fixation capacity. The other drought-tolerant cultivar Xushu-18 responded to drought stress by regulating the isoquinoline alkaloid biosynthesis and nitrogen/carbohydrate metabolism. The extremely drought-tolerant cultivar Xuzi-8 was almost unaffected by drought stress and responded to drought environment only by regulating the cell wall. These findings provide important information for the selection of sweet potatoes for specific purposes.
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Affiliation(s)
- Enliang Liu
- Grain Crops Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Linli Xu
- Comprehensive Proving Ground, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Zhengqian Luo
- Comprehensive Proving Ground, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Zhiqiang Li
- Grain Crops Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Guohui Zhou
- Adsen Biotechnology Co., Ltd., Urumqi, China
| | - Haifeng Gao
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Furong Fang
- Grain Crops Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Jun Tang
- Xuzhou Institute of Agricultural Sciences in Xuhuai District, Xuzhou, China
| | - Yue Zhao
- Grain Crops Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Zhilin Zhou
- Xuzhou Institute of Agricultural Sciences in Xuhuai District, Xuzhou, China
| | - Ping Jin
- Comprehensive Proving Ground, Xinjiang Academy of Agricultural Sciences, Urumqi, China
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Sharma N, Shivran M, Singh N, Dubey AK, Singh SK, Sharma N, Gupta R, Vittal H, Singh BP, Sevanthi AM, Singh NK. Differential gene expression associated with flower development of mango (Mangifera indica L.) varieties with different shelf-life. Gene Expr Patterns 2023; 47:119301. [PMID: 36526239 DOI: 10.1016/j.gep.2022.119301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 11/22/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Mango (Mangifera indica L.) is one of the most important commercial fruit crop grown in many parts of the world. Major challenges affecting mango trade are short shelf-life, high susceptibility to chilling injury, post-harvest diseases and consumer demand for improved fruit quality. The objective of the present study was to reveal the key regulators present in bud and flower tissues during flower development stage, associated with fruit development and affect the shelf-life of the mango fruit. RNA-sequencing of contrasting genotypes having short and long shelf-life, was carried out. Comparative differential expression pathway studies of long shelf-life (Totapuri) and short shelf-life (Bombay Green) mango genotypes revealed a total of 177 highly differentially expressed genes. Out of 177 total genes, 101 genes from endoplasmic reticulum pathway and very few from gibberellins (3) and jasmonic acid (1) pathway were identified. Genes from endoplasmic reticulum pathway like hsp 90, SRC2, DFRA, CHS, BG3 and ASPG1 mainly up regulated in Bombay Green. Uniprotein B9R8D3 also shows up regulation in Bombay Green. Ethylene insensitive pathway gene EIL1 up regulated in Bombay Green. Gene CAD1 from phenylpropanoid pathway mainly up regulated in Bombay Green. A total of 4 SSRs and 227 SNPs were mined from these pathways specific to the shelf-life. Molecular studies of endoplasmic reticulum, phenylpropanoid, ethylene, polygalacturonase and hormone pathways at the time of bud and flower formation revealed key regulators that determine the shelf-life of mango fruit.
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Affiliation(s)
- Nimisha Sharma
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Mukesh Shivran
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Narendra Singh
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Anil Kumar Dubey
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Sanjay Kumar Singh
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Neha Sharma
- IILM Academy of Higher Learning, College of Engineering and Technology Greater, Noida, Uttar Pradesh, 201310, India
| | - Ruchi Gupta
- NGB Diagnostics Private Limited, Noida, UP, 201301, India
| | - Hatkari Vittal
- Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
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Tang W, Arisha MH, Zhang Z, Yan H, Kou M, Song W, Li C, Gao R, Ma M, Wang X, Zhang Y, Li Z, Li Q. Comparative transcriptomic and proteomic analysis reveals common molecular factors responsive to heat and drought stresses in sweetpotaoto ( Ipomoea batatas). FRONTIERS IN PLANT SCIENCE 2023; 13:1081948. [PMID: 36743565 PMCID: PMC9892860 DOI: 10.3389/fpls.2022.1081948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/28/2022] [Indexed: 06/18/2023]
Abstract
Introduction Crops are affected by various abiotic stresses, among which heat (HT) and drought (DR) stresses are the most common in summer. Many studies have been conducted on HT and DR, but relatively little is known about how drought and heat combination (DH) affects plants at molecular level. Methods Here, we investigated the responses of sweetpotato to HT, DR, and DH stresses by RNA-seq and data-independent acquisition (DIA) technologies, using controlled experiments and the quantification of both gene and protein levels in paired samples. Results Twelve cDNA libraries were created under HT, DR, and DH conditions and controls. We identified 536, 389, and 907 DEGs in response to HT, DR, and DH stresses, respectively. Of these, 147 genes were common and 447 were specifically associated with DH stress. Proteomic analysis identified 1609, 1168, and 1535 DEPs under HT, DR, and DH treatments, respectively, compared with the control, of which 656 were common and 358 were exclusive to DH stress. Further analysis revealed the DEGs/DEPs were associated with heat shock proteins, carbon metabolism, phenylalanine metabolism, starch and cellulose metabolism, and plant defense, amongst others. Correlation analysis identified 6465, 6607, and 6435 co-expressed genes and proteins under HT, DR, and DH stresses respectively. In addition, a combined analysis of the transcriptomic and proteomic data identified 59, 35, and 86 significantly co-expressed DEGs and DEPs under HT, DR, and DH stresses, respectively. Especially, top 5 up-regulated co-expressed DEGs and DEPs (At5g58770, C24B11.05, Os04g0679100, BACOVA_02659 and HSP70-5) and down-regulated co-expressed DEGs and DEPs (AN3, PMT2, TUBB5, FL and CYP98A3) were identified under DH stress. Discussion This is the first study of differential genes and proteins in sweetpotato under DH stress, and it is hoped that the findings will assist in clarifying the molecular mechanisms involved in sweetpotato resistance to heat and drought stress.
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Affiliation(s)
- Wei Tang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Mohamed Hamed Arisha
- Department of Horticulture, Faculty of Agriculture, Zagazig University, Zagazig, Sharkia, Egypt
| | - Zhenyi Zhang
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Hui Yan
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Meng Kou
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Weihan Song
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Chen Li
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Runfei Gao
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Meng Ma
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Xin Wang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Yungang Zhang
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
| | - Zongyun Li
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Qiang Li
- Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of Sweetpotato, Ministry of Agriculture and Rural Affairs, Xuzhou, China
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The Effect of Short-Term Temperature Pretreatments on Sugars, Organic Acids, and Amino Acids Metabolism in Valencia Orange Fruit. J FOOD QUALITY 2022. [DOI: 10.1155/2022/8188000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Temperature pretreatment is one of the most important factors which significantly affects the postharvest quality of citrus fruit. In this study, late-ripening Valencia orange (citrus sinensis) fruits were used to investigate the effect of short-term treatment at low (6°C), room (20°C), and high (40°C) temperatures on fruit quality. Our results revealed that both low and room-temperature treatments maintained the content of sugars and organic acids, whereas high-temperature treatments elevated the accumulation of sugars but decreased the content of citric acid. In fruit peel (flavedo and albedo), the accumulation of sugars and organic acids responding to temperatures was diverse and mostly different from that in the pulp. Meanwhile, GABA and several amino acids were upregulated under short-term high-temperature treatment but downregulated in response to low-temperature treatment in both peel and pulp. Furthermore, PCA and correlation analysis revealed that the short-term temperature treatments changed the metabolic flow, and GABA was positively correlated with sugars and organic acids. Our study analyzed the metabolic changes of fruit peel and pulp in response to short-term temperature treatments and revealed that GABA may act as a signaling molecular involved in temperature-controlled quality changes.
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Ji CY, Kim YH, Lee CJ, Park SU, Lee HU, Kwak SS, Kim HS. Comparative transcriptome profiling of sweetpotato storage roots during curing-mediated wound healing. Gene 2022; 833:146592. [PMID: 35605748 DOI: 10.1016/j.gene.2022.146592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/14/2022] [Accepted: 05/16/2022] [Indexed: 11/04/2022]
Abstract
Sweetpotato (Ipomoea batatas L. Lam) is an economically important crop that is cultivated for its storage roots. Storage roots provide a source of valuable nutrients, processed foods, animal feeds, and pigments. Sweetpotato storage roots spoil during post-harvest handling because of wounding, which makes them more susceptible to disease-causing microorganisms. Curing to promote wound healing is a common method to control microbial spoilage during post-harvest storage. However, molecular mechanisms underlying the process of curing in sweetpotato storage roots are unknown. To better understand the biology behind curing, the transcriptome of the sweetpotato cultivar, Pungwonmi, was studied using RNA-seq. Storage roots of sweetpotato were treated at 33 °C (Curing) and 13 °C (Control) for 3 days. RNA-seq data identified 78,781 unigenes and 3,366 differentially expressed genes by over log2 fold change (FC) > 2 and <-2. During curing, DEGs encoded genes related to drought/salt stress responses, phyto-hormones (e.g., auxin, ethylene and jasmonic acid), and proteolysis, were up-regulated, whereas those related to redox state, phyto-hormones (e.g., salicylic acid and brassinosteroids), and lignin and flavonoid biosynthesis were down-regulated. Additionally, among the candidate genes, DEGs encoded genes related to proteolysis and pathogen defense, such as protease inhibitors and lipid transfer proteins, were highly up-regulated during curing and storage. This study provides a valuable resource to further understand the molecular basis of curing-mediated wound healing in sweetpotato storage roots. Moreover, genes revealed in this work could present targets for the development of sweetpotato varieties with improved post-harvest storage characteristics.
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Affiliation(s)
- Chang Yoon Ji
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon 34141, Republic of Korea; R&D Center, Genolution Inc., 63, Magokjungang 8-ro 3-gil, Gangseo-gu, Seoul 07793, Republic of Korea
| | - Yun-Hee Kim
- Department of Biology Education, IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Chan-Ju Lee
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Sul-U Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Hyeong-Un Lee
- Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Muan-gun 58545, Republic of Korea
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea.
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon 34141, Republic of Korea.
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Jin R, Yu T, Guo P, Liu M, Pan J, Zhao P, Zhang Q, Zhu X, Wang J, Zhang A, Cao Q, Tang Z. Comparative Transcriptome and Interaction Protein Analysis Reveals the Mechanism of IbMPK3-Overexpressing Transgenic Sweet Potato Response to Low-Temperature Stress. Genes (Basel) 2022; 13:genes13071247. [PMID: 35886030 PMCID: PMC9317282 DOI: 10.3390/genes13071247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/20/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
The sweet potato is very sensitive to low temperature. Our previous study revealed that IbMPK3-overexpressing transgenic sweet potato (M3) plants showed stronger low-temperature stress tolerance than wild-type plants (WT). However, the mechanism of M3 plants in response to low-temperature stress is unclear. To further analyze how IbMPK3 mediates low-temperature stress in sweet potato, WT and M3 plants were exposed to low-temperature stress for 2 h and 12 h for RNA-seq analysis, whereas normal conditions were used as a control (CK). In total, 3436 and 8718 differentially expressed genes (DEGs) were identified in WT at 2 h (vs. CK) and 12 h (vs. CK) under low-temperature stress, respectively, whereas 1450 and 9291 DEGs were detected in M3 plants, respectively. Many common and unique DEGs were analyzed in WT and M3 plants. DEGs related to low temperature were involved in Ca2+ signaling, MAPK cascades, the reactive oxygen species (ROS) signaling pathway, hormone transduction pathway, encoding transcription factor families (bHLH, NAC, and WRKY), and downstream stress-related genes. Additionally, more upregulated genes were associated with the MAPK pathway in M3 plants during short-term low-temperature stress (CK vs. 2 h), and more upregulated genes were involved in secondary metabolic synthesis in M3 plants than in the WT during the long-time low-temperature stress treatment (CK vs. 12 h), such as fatty acid biosynthesis and elongation, glutathione metabolism, flavonoid biosynthesis, carotenoid biosynthesis, and zeatin biosynthesis. Moreover, the interaction proteins of IbMPK3 related to photosynthesis, or encoding CaM, NAC, and ribosomal proteins, were identified using yeast two-hybrid (Y2H). This study may provide a valuable resource for elucidating the sweet potato low-temperature stress resistance mechanism, as well as data to support molecular-assisted breeding with the IbMPK3 gene.
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Affiliation(s)
- Rong Jin
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Tao Yu
- Tube Division, Crop Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang 110000, China; (T.Y.); (J.P.)
| | - Pengyu Guo
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Ming Liu
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Jiaquan Pan
- Tube Division, Crop Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang 110000, China; (T.Y.); (J.P.)
| | - Peng Zhao
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Qiangqiang Zhang
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Xiaoya Zhu
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Jing Wang
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Aijun Zhang
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Qinghe Cao
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
| | - Zhonghou Tang
- Xuzhou Sweet Potato Research Center, Xuzhou Institute of Agricultural Sciences Jiangsu, China/Key Laboratory of Sweet Potato Biology and Genetic Breeding, Ministry of Agriculture/National Agricultural Experimental Station for Soil Quality, Xuzhou 221000, China; (R.J.); (P.G.); (M.L.); (P.Z.); (Q.Z.); (X.Z.); (J.W.); (A.Z.); (Q.C.)
- Correspondence: ; Tel.: +86-0516-82189235
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Luan Y, Dong Y, Duan X, Wang X, Pang Y, Li Q, Gou M. TMT-based quantitative proteomics reveals protein biomarkers from cultured Pacific abalone (Haliotis discus hannai) in different regions. Food Chem X 2022; 14:100355. [PMID: 35693453 PMCID: PMC9184861 DOI: 10.1016/j.fochx.2022.100355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/22/2022] [Accepted: 06/01/2022] [Indexed: 11/07/2022] Open
Abstract
TMT-based proteomics was used to study and compare the muscle protein profiles of Pacific abalones between northern and southern China. 729 differential abundance proteins were identified in different regions. Fatty acid synthase and other 3 proteins were identified as candidate biomarkers for identification of northern and southern abalone.
Due to latitude, the growth cycle of abalone in southern China is significantly lower than that in the northern regions. Therefore, it often occurs merchants use southern abalone to disguise as northern abalone. This study aims to explore the differences in the muscle proteome of Pacific abalone (Haliotis discus hannai) in different regions. A total of 1,569 proteins were detected and 729 proteins were identified as differential abundance proteins (DAPs) in Haliotis discus hannai cultured in Northern (Liaoning Province) and Southern (Fujian Province) China. Bioinformatics analysis revealed and Western blot verified that fatty acid synthase, troponin I, calpain small subunit 1, and myosin light chain 6 are candidate biomarkers for abalone cultured in different regions. This study provides a deeper understanding of how to distinguish which region abalone is harvested from to improve abalone quality controls, and prevent food fraud.
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Lee CJ, Kim SE, Park SU, Lim YH, Ji CY, Jo H, Lee JD, Yoon UH, Kim HS, Kwak SS. Overexpression of IbFAD8 Enhances the Low-Temperature Storage Ability and Alpha-Linolenic Acid Content of Sweetpotato Tuberous Roots. FRONTIERS IN PLANT SCIENCE 2021; 12:764100. [PMID: 34777447 PMCID: PMC8589035 DOI: 10.3389/fpls.2021.764100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/04/2021] [Indexed: 05/13/2023]
Abstract
Sweetpotato is an emerging food crop that ensures food and nutrition security in the face of climate change. Alpha-linoleic acid (ALA) is one of the key factors affecting plant stress tolerance and is also an essential nutrient in humans. In plants, fatty acid desaturase 8 (FAD8) synthesizes ALA from linoleic acid (LA). Previously, we identified the cold-induced IbFAD8 gene from RNA-seq of sweetpotato tuberous roots stored at low-temperature. In this study, we investigated the effect of IbFAD8 on the low-temperature storage ability and ALA content of the tuberous roots of sweetpotato. Transgenic sweetpotato plants overexpressing IbFAD8 (TF plants) exhibited increased cold and drought stress tolerance and enhanced heat stress susceptibility compared with non-transgenic (NT) plants. The ALA content of the tuberous roots of TF plants (0.19 g/100 g DW) was ca. 3.8-fold higher than that of NT plants (0.05 g/100 g DW), resulting in 8-9-fold increase in the ALA/LA ratio in TF plants. Furthermore, tuberous roots of TF plants showed better low-temperature storage ability compared with NT plants. These results indicate that IbFAD8 is a valuable candidate gene for increasing the ALA content, environmental stress tolerance, and low-temperature storage ability of sweetpotato tuberous roots via molecular breeding.
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Affiliation(s)
- Chan-Ju Lee
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, South Korea
| | - So-Eun Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, South Korea
| | - Sul-U Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, South Korea
| | - Ye-Hoon Lim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, South Korea
| | | | - Hyun Jo
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Jeong-Dong Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Ung-Han Yoon
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, South Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, South Korea
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Transcriptome Profiling of Maize ( Zea mays L.) Leaves Reveals Key Cold-Responsive Genes, Transcription Factors, and Metabolic Pathways Regulating Cold Stress Tolerance at the Seedling Stage. Genes (Basel) 2021; 12:genes12101638. [PMID: 34681032 PMCID: PMC8535276 DOI: 10.3390/genes12101638] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/27/2021] [Accepted: 10/11/2021] [Indexed: 01/22/2023] Open
Abstract
Cold tolerance is a complex trait that requires a critical perspective to understand its underpinning mechanism. To unravel the molecular framework underlying maize (Zea mays L.) cold stress tolerance, we conducted a comparative transcriptome profiling of 24 cold-tolerant and 22 cold-sensitive inbred lines affected by cold stress at the seedling stage. Using the RNA-seq method, we identified 2237 differentially expressed genes (DEGs), namely 1656 and 581 annotated and unannotated DEGs, respectively. Further analysis of the 1656 annotated DEGs mined out two critical sets of cold-responsive DEGs, namely 779 and 877 DEGs, which were significantly enhanced in the tolerant and sensitive lines, respectively. Functional analysis of the 1656 DEGs highlighted the enrichment of signaling, carotenoid, lipid metabolism, transcription factors (TFs), peroxisome, and amino acid metabolism. A total of 147 TFs belonging to 32 families, including MYB, ERF, NAC, WRKY, bHLH, MIKC MADS, and C2H2, were strongly altered by cold stress. Moreover, the tolerant lines’ 779 enhanced DEGs were predominantly associated with carotenoid, ABC transporter, glutathione, lipid metabolism, and amino acid metabolism. In comparison, the cold-sensitive lines’ 877 enhanced DEGs were significantly enriched for MAPK signaling, peroxisome, ribosome, and carbon metabolism pathways. The biggest proportion of the unannotated DEGs was implicated in the roles of long non-coding RNAs (lncRNAs). Taken together, this study provides valuable insights that offer a deeper understanding of the molecular mechanisms underlying maize response to cold stress at the seedling stage, thus opening up possibilities for a breeding program of maize tolerance to cold stress.
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He S, Hao X, He S, Hao X, Chen X. Genome-wide identification, phylogeny and expression analysis of AP2/ERF transcription factors family in sweet potato. BMC Genomics 2021; 22:748. [PMID: 34656106 PMCID: PMC8520649 DOI: 10.1186/s12864-021-08043-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
Background In recent years, much attention has been given to AP2/ERF transcription factors because they play indispensable roles in many biological processes, such as plant development and biotic and abiotic stress responses. Although AP2/ERFs have been thoroughly characterised in many plant species, the knowledge about this family in the sweet potato, which is a vital edible and medicinal crop, is still limited. In this study, a comprehensive genome-wide investigation was conducted to characterise the AP2/ERF gene family in the sweet potato. Results Here, 198 IbAP2/ERF transcription factors were obtained. Phylogenetic analysis classified the members of the IbAP2/ERF family into three groups, namely, ERF (172 members), AP2 (21 members) and RAV (5 members), which was consistent with the analysis of gene structure and conserved protein domains. The evolutionary characteristics of these IbAP2/ERF genes were systematically investigated by analysing chromosome location, conserved protein motifs and gene duplication events, indicating that the expansion of the IbAP2/ERF gene family may have been caused by tandem duplication. Furthermore, the analysis of cis-acting elements in IbAP2/ERF gene promoters implied that these genes may play crucial roles in plant growth, development and stress responses. Additionally, the available RNA-seq data and quantitative real-time PCR (qRT-PCR) were used to investigate the expression patterns of IbAP2/ERF genes during sweet potato root development as well as under multiple forms of abiotic stress, and we identified several developmental stage-specific and stress-responsive IbAP2/ERF genes. Furthermore, g59127 was differentially expressed under various stress conditions and was identified as a nuclear protein, which was in line with predicted subcellular localization results. Conclusions This study originally revealed the characteristics of the IbAP2/ERF superfamily and provides valuable resources for further evolutionary and functional investigations of IbAP2/ERF genes in the sweet potato. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08043-w.
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Affiliation(s)
- Shutao He
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Xiaomeng Hao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuli He
- Jining College Affiliated Senior High School, Jining, 272004, China
| | - Xiaoge Hao
- Tsinghua University, Beijing, 100084, China
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12
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Lee CJ, Kim SE, Park SU, Lim YH, Choi HY, Kim WG, Ji CY, Kim HS, Kwak SS. Tuberous roots of transgenic sweetpotato overexpressing IbCAD1 have enhanced low-temperature storage phenotypes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:549-557. [PMID: 34174660 DOI: 10.1016/j.plaphy.2021.06.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
Lignin is associated with cell wall rigidity, water and solute transport, and resistance to diverse stresses in plants. Lignin consists of polymerized monolignols (p-coumaryl, coniferyl, and sinapyl alcohols), which are synthesized by cinnamyl alcohol dehydrogenase (CAD) in the phenylpropanoid pathway. We previously investigated cold-induced IbCAD1 expression by transcriptome profiling of cold-stored tuberous roots of sweetpotato (Ipomoea batatas [L.] Lam). In this study, we confirmed that IbCAD1 expression levels depended on the sweetpotato root type and were strongly induced by several abiotic stresses. We generated transgenic sweetpotato plants overexpressing IbCAD1 (TC plants) to investigate CAD1 physiological functions in sweetpotato. TC plants displayed lower root weights and lower ratios of tuberous roots to pencil roots than non-transgenic (NT) plants. The lignin contents in tuberous roots of NT and TC plants differed slightly, but these differences were not significant. By contrast, monolignol levels and syringyl (S)/guaiacyl (G) ratios were higher in TC plants than NT plants, primarily owing to syringyl unit accumulation. Tuberous roots of TC plants displayed enhanced low-temperature (4 °C) storage with lower malondialdehyde and H2O2 contents than NT plants. We propose that high monolignol levels in TC tuberous roots served as substrates for increased peroxidase activity, thereby enhancing antioxidation capacity against cold stress-induced reactive oxygen species. Increased monolignol contents and/or increased S/G ratios might contribute to pathogen-induced stress tolerance as a secondary chilling-damage response in sweetpotato. These results provide novel information about CAD1 function in cold stress tolerance and root formation mechanisms in sweetpotato.
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Affiliation(s)
- Chan-Ju Lee
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - So-Eun Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Sul-U Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Ye-Hoon Lim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Ha-Young Choi
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Bio-Molecular Science, KRIBB School of Bioscience, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Won-Gon Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Bio-Molecular Science, KRIBB School of Bioscience, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Chang Yoon Ji
- R&D Center, Genolution Inc., 11, Beobwon-ro 11-gil, Songpa-gu, Seoul, 05836, Republic of Korea
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea.
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Transcriptomic Profiling of Young Cotyledons Response to Chilling Stress in Two Contrasting Cotton ( Gossypium hirsutum L.) Genotypes at the Seedling Stage. Int J Mol Sci 2020; 21:ijms21145095. [PMID: 32707667 PMCID: PMC7404027 DOI: 10.3390/ijms21145095] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 12/19/2022] Open
Abstract
Young cotyledons of cotton seedlings are most susceptible to chilling stress. To gain insight into the potential mechanism of cold tolerance of young cotton cotyledons, we conducted physiological and comparative transcriptome analysis of two varieties with contrasting phenotypes. The evaluation of chilling injury of young cotyledons among 74 cotton varieties revealed that H559 was the most tolerant and YM21 was the most sensitive. The physiological analysis found that the ROS scavenging ability was lower, and cell membrane damage was more severe in the cotyledons of YM21 than that of H559 under chilling stress. RNA-seq analysis identified a total of 44,998 expressed genes and 19,982 differentially expressed genes (DEGs) in young cotyledons of the two varieties under chilling stress. Weighted gene coexpression network analysis (WGCNA) of all DEGs revealed four significant modules with close correlation with specific samples. The GO-term enrichment analysis found that lots of genes in H559-specific modules were involved in plant resistance to abiotic stress. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that pathways such as plant hormone signal transduction, MAPK signaling, and plant–pathogen interaction were related to chilling stress response. A total of 574 transcription factors and 936 hub genes in these modules were identified. Twenty hub genes were selected for qRT-PCR verification, revealing the reliability and accuracy of transcriptome data. These findings will lay a foundation for future research on the molecular mechanism of cold tolerance in cotyledons of cotton.
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Yu J, Su D, Yang D, Dong T, Tang Z, Li H, Han Y, Li Z, Zhang B. Chilling and Heat Stress-Induced Physiological Changes and MicroRNA-Related Mechanism in Sweetpotato ( Ipomoea batatas L.). FRONTIERS IN PLANT SCIENCE 2020; 11:687. [PMID: 32528515 PMCID: PMC7264270 DOI: 10.3389/fpls.2020.00687] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 04/30/2020] [Indexed: 05/09/2023]
Abstract
Sweetpotato (Ipomoea batatas (L.) Lam.) is an important industrial and food crop. Both chilling and heat stress inhibits sweetpotato growth and development and then affects yield. However, the physiological and molecular mechanisms of sweetpotato response to chilling and heat stress is unclear. In this study, we investigated the effect of extreme temperature on sweetpotato physiological response, with a focus on oxidative stress and the potential microRNA (miRNA)-mediated molecular mechanism. Our results showed that both chilling and heat stress resulted in accumulation of reactive oxygen species (ROS), including H2O2 and O2 -, and caused oxidative stress in sweetpotato. This further affected the activities of oxidative stress-related enzymes and products, including SOD, POD, and MDA. Both chilling and heat stress inhibited POD activities but induced the enzyme activities of SOD and MDA. This suggests that sweetpotato cells initiated its own defense mechanism to handle extreme temperature-caused oxidative damage. Oxidative damage and repair are one mechanism that sweetpotato plants respond to extreme temperatures. Another potential mechanism is miRNA-mediated gene response. Chilling and heat stress altered the expression of stress-responsive miRNAs in sweetpotato seedlings. These miRNAs regulate sweetpotato response to extreme stress through targeting individual protein-coding genes.
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Affiliation(s)
- Jingjing Yu
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Jiangsu Normal University, Xuzhou, China
- Department of Biology, East Carolina University, Greenville, NC, United States
| | - Dan Su
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Jiangsu Normal University, Xuzhou, China
| | - Dongjing Yang
- Xuzhou Institute of Agricultural Sciences in Xuhuai District, Jiangsu Xuzhou Sweetpotato Research Center, Sweet Potato Research Institute, CAAS, Xuzhou, China
- Key Laboratory of Biology and Genetic Improvement of Sweetpotato, Ministry of Agriculture, Xuzhou, China
| | - Tingting Dong
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Jiangsu Normal University, Xuzhou, China
| | - Zhonghou Tang
- Xuzhou Institute of Agricultural Sciences in Xuhuai District, Jiangsu Xuzhou Sweetpotato Research Center, Sweet Potato Research Institute, CAAS, Xuzhou, China
- Key Laboratory of Biology and Genetic Improvement of Sweetpotato, Ministry of Agriculture, Xuzhou, China
| | - Hongmin Li
- Xuzhou Institute of Agricultural Sciences in Xuhuai District, Jiangsu Xuzhou Sweetpotato Research Center, Sweet Potato Research Institute, CAAS, Xuzhou, China
- Key Laboratory of Biology and Genetic Improvement of Sweetpotato, Ministry of Agriculture, Xuzhou, China
| | - Yonghua Han
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Jiangsu Normal University, Xuzhou, China
| | - Zongyun Li
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Jiangsu Normal University, Xuzhou, China
- *Correspondence: Zongyun Li,
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC, United States
- Baohong Zhang,
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